Shock-absorber.



R. E. BATES. SHOCK ABSORBER. APPLICATION FILED ocr. s. 1914.

RALPH E.

SHOCK-ABSQRBER.

1b all whom-fit may ,conce/rnflffBe it knownthat I, `RALPH E. BATES,

.citizen of theUnited States, residing-.in tliecity of Philadelphia,-connty of Philai `f jdelphia, and State, of Pennsylvania, have infvented A,certain Improvements in ,Shock-Ab- A-s`o`i"bers,- of-vahichlthe following is a` specifi- ;aiwni y vehicles, but. it infill beunderstood thatjt y'is adapted forgeneral application.

My chief objects-are to increase the resiliency of springs and tocontrol the rebound. These ends are accomplished, in the preferredconstruction, by the use of a cylinder and piston connected by levermechanism with springs, whereby the desired functions are performed inan efficient inanner, the cylinder being provided with a spring andcheck valve for effecting pneumatic and mechanical control of the pistonist to obtain the desired results in the most ellicient manner.

Characteristic improvements of my invention i side in the peculiarcapacity thereof for ready application to existing constructions, theroad clearance provided thereby, andthe compactness and simplicity ofthe construction.

`The invention is fully set forth in the following description and theaccompanying drawings in illustration thereof.

In the drawings, Figure 1` is a side elevation of part of an ellipticalspring having my invention applied thereto; Fig. 2 represents acompressed position of the construction shown in Fig. l; Fig. 3 is abroken sectional view taken on the line of Fig. 1; Fig. 4 is an endelevation of the construction shown in Fig. 1; Fig. 5 is a longitudinalsectional View taken through the cylinder; and Fig. 6 is a sectionalView taken on the line i/-y of Fig. 5.

The mechanism, as illustrated in the drawings, comprises the upper leafspring 1 having the double ,crank lever 2 fulcrumed on the end thereofby the bolt 3, the lower leaf Spring a having the double lever 5fulcrumed on the end thereof by the bolt 6, the bolt or pintle 7 forflexibly connecting or hinging the levers together, the cylinder 8 piv-Aotally mounted betweeny similar arms of the `Speciication of LettersPatent. Appnation inea oetoer 9,1914. semi No. season My invention'is ashock absorber designedA primarily for use on automobiles or motor N DSTATES PATENT oEEicE.

BATES, or PHILADELPHIA, PENNSYLVANIA, AssIcNon To W. .y i, NAzEnoEPHILADELPHIA, PENNsYLvaNIA.

Patented May 1.916.

nected'to the lever 5 by `the bolt or pintle` l12,. and the helicalyspring 18 disposed in the cylinder between the forward end thereofandthe piston; tliellatte/r havingv the" ports 1-1 controlled bythecheck' "valves 15 normally seated 'by' the coiled 'springs 16 whichreston the pistons faceplate `17 containing airpassages 18 communicatingWiththe portsk 14 when the 'check valves are opened: l The loadappliedf'tf) the leaf Spring l is communicated to thefleafspring 4sthrough the intermediate mechanism described, so

` that the piston 10 yis moved inthe cylinder 8 against the action ofthe spring 13 an ,i simultaneouslyl air flows from the front to the rearend of the cylinder through the ports la and 18, the pivoted relation ofthe parts providing entire flexibility of movement under the load orshock from the position slioivn in Fig. 1 to the position shown in Fig.2. As the springs 1 and l separate upon the rebound, the mechanismreturns gradually to the position shown in Fig. l from' that shown inFig. 2, by reason of the fact that the rearward movement of the pistonis controlled by the air confined in the rear end of the cylinder by thecheck valves 15, the gradual escape of the air taking place at thedesired rate around the piston.

The helical spring 13 is constructed so that it shall have approximatelythe same elasticity as the springs 1 and d, hence the resultantelasticity is increased by that of the helical spring. The mounting ofthe cylinder, involving a principle analogous to that of the lazy tongs,provides an extended movement for the piston over that ofthe ends of theelliptical spring and permits a weaker elliptical sprin -to be used thanwould otherwise be p cticable. The rebound is elf'ectually contrplled bythe air cushion, the action of which can be regulated. The method ofmounting is such., that no alteration is required in the usual 190'Having described my invention, I claim:

1. The combination of a pair of members adapted to move relatively, witha shock absorber comprising a lever fulcrumed intermediate its length onone of said members, a

lever fulcrumed intermediate its length on v `the-'other of saidmembers, means for piv'- otally connecting ends of the respectivelevers, andmeans comprising a'cylinder and istonconnecting the opposite`ends of said evers, said cylinder being supported intermediate of itslength.

,1 Y 2. The Icombination of a pair of members,

vvith a shock ,.ver fulcrumed intermediate of its length on absorbercomprising a bent 1eone of said members, a bent lever fulcrumedintermediate/of its length on the other of ,said members,

means for pivotally connectl"ing4 'corresponding ends of said levers, apneumatic cylinder and a piston therein re- .spectively connected withthe other ends of y said levers, so

that said cylinder is supported in an approximately horizontal position,and

i I a Sprlng'disposed in said cylinder so as to oppose the movement ofsaid-piston when either of said members is moved toward the other.

3,-f`1`iu; combination of a pair of springs,

- with4 a shock absorber comprising levers fulcrumed on the respectivesprings, means for connecting said, levers in rocking relation,

and means comprislng a cylinder having trunnions connected With one ofsaid levers and a piston connected With the other ofjsaid levers so thatsaid cylinder -is disposed 'substantially horizontally.

In testimony Whereor` I have hereunto set my name this 7th day ofOctober, 1914, in the presence of the subscribing witnesses.

RALPH BATES." Witnessesz. i

RALPHW. NAzEL,

Jos. G. DENNY, Jr.

